Envelop-machine.



PATENTED APR. 16 1907.

No. 850,880. I

0. E. DULIN.

ENVELOP MACHINE.

LPPLIOATIOX FILED AUGU1 19 06.

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INVENTOR L; rn/run.

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No. 850,880. 7 PATENTED APR. 16, 1907.

G. E. DULIN. 4 3

BNVBLOP MAGHINB.

APPLICATION nun we. 1. 1906.

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ru's mmms PETERS 00., WASPQINGTON, n. c,

PATENTBD APR. 16, 1907.

4 SHEETS-SHEET 3' INYENTUH BY Mam G E DULIN ENVELOP MACHINE. APPLICATION FILED we. 1, 1906.

5. ATTORNEY PATENTED APR. 16, 1907.

I No. 850,880.

C. ELDULIN.

ENVELOP MACHINE.

APPLIOATION FILED AUG. 1, 1906.

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UNITED STATES PATENT OFFICE.-

CHARLES E. DULIN, OF NORTH TONAWANDA, NE YORK, ASSIGNOR TO UNION PAPER BAG MACHINE COMPANY, OF PHILADELPHIA, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

ENVVELOQP-MACHINE.

Patented April 16, 1907.

Original application filed November 5, 1 90 1, gerial No. 81,116 Divided and thisapplication filed August 1,1906. Serial No. 328,648.

To all oll/071a it new concern.-

Be it known that 1, CHARLES E. DULIN, a

, citizen of the United States of America, residing in North Tonawanda, in the county of "Niagara and State of New York, have in- 'ously-fed strip of paper, and particularly to the mechanism for cutting envelop-blanks from said strip.

,The object of my invention is the provision of blank-cutting mechanism suitable for use in rapidly and efficiently manufacturing a peculiar style of envelop.

The nature of my improvements will be bestunderstood as described in connection with the drawings, in which they are illus- 2 on the main driving-shaft removed.

1 3 3 ofFig. 1.

"-trated, and in which Figure 1 is a plan view of the. machine; Fig. 2, a side elevation with the belt-ygheels ig. 3 is .a sectional elevation through the operative parts of the machine, taken on'the line Fig. 4 is a plan view of the table upon which the web of paper is severed 1 into lengths to be formed. into envelops.

'Fig. 5 is an inverted view of the oscillating cutter used to'sever the blanks in connection with the table of Fig. .4. Fig. 6 is a longitudinal section through the cutter and table,

taken as on the line 6 6 of Fig. 5, showing the cutter in elevated. position. Fig. 7 is a similar sectional view showing the cutter in de-.

pressed position. Fig. 8 is a sectional view Fig. 9 is a top ming-rolls, taken on the line 12 12 of Fig. 1.1. Figs. 13 and 14 are sectional views of the trimming-rolls, showing their operation upon the sections of the paper strip. Fig. 15 is a plan view-of the strip, showing the. cuts made upon it in converting it into blanks to be manufactured into envelops. Fig. 16 is a view of the blank. Fig. 17 is a view of the lines T T of Fig. 15.

' blank with its edges turned, and Fig; 18 a view of the complete envelop. u

A indicates the frame ofthe machine; B, the shaft supporting cones B, upon which in turn the roll of paper is supp0rted. ",From this roll the paper strip P is shown as leading upward over guide-rolls B and B to the first pair of feed and slitting rolls, (indicated at D C the said roll C being secured. on the main driving-shaft C of the machine, to

which are also secured fastand loose. pulleys C and CF, a hand-wheel G a gear-wheel G which engages agear-wheel D on the-shaft D, ,to which is secured the upper feed-roll D This upper feed-roll is, as shown, grooved at D D andthe lower feed-roll C is provided withprojecting knives G which extend into these grooves and which slit the paper on the The shaftiC has also attached to it a cam (indicated at C and a second gear-wheel,(indicated at C which, through an intermediate gear 0 (see Fig. 1,) communicates motion to a gear G, secured to the shaft G, to which. shaft is secured a'gearwheel G driving, through the gearrWheel'H, the shaft H and also a third gear-wheel G which communicates motion through the intermediate gear 9 to theshaft I through its gear-wheel I and to the shaft L through its gear-wheel L, said gear-wheel L in turn actuating the shaft M through its gear M. The

gearfwheel G, before mentioned, in turn communicates motion through an intermediate gear-wheel g to the shaft 0 through its gear 0, and this shaft in turn is provided with a gear-wheel which engages the gearwheel P, secured. to the shaft P, thesaid gear-wheel P also engaging and driving a shaft Q through its gear g. All of theabove parts, it will be observed, are continuously and positively in motion. Y

Returning now to the operative part of the machine, the slitting and feed rollson the shaft C and D slit and deliver the paper over the table ,E, which near its upper 'end is formed with an upwardly-extending shoulder E, said shoulder supporting a knife-edge e and a backwardly-extending receiving-plate, (indicated at e while the table proper, E, is shown as covered by a thin plate 6 and near its .bottom edge is provided with lateral guideblades, (indicated at E E Extend.- ing across the table andsupported in suitable bearings is the rock-shaft F of the oscillatory cutter, having attached to it a lever-arm F, which is held in contact with the cam C by the action of a spring F (See Fig. 1.) As shown, the rock-shaft F is cut away, flattened, and somewhat extended at the center, as indicated at], and to the under side of this flattened portion is secured what is preferably, as shown, a circular knife F having a downwardly-extending cutting edge (indicated at f and secured to the oscillatory shaft by a central bolt, (indicated at F'.) This circular construction of the knife enables it to be angularly adjusted and fresh cutting edges brought into operation. Also secured to the flattened portion of the oscillatory shaft are the cutters or knives F F, having sharp cutting edges f fitting against the opposite sides of the circular knife F Extending close to the face of the knife F and between the cutters F is the stripper-plate F, having its front end preferably bent slightly upward, as indicated at f. This stripper-plate is by means of upwardly extending pins and springs F secured to fingers F extending out from the flattened portion f of the shaft, the springs holding the stripper normally flush with the knife-edge, but arranged to permit it to move upward when necessary.

The shape of the stationary cutter e is shown in Fig. 4 and corresponds to the cutters F and the portion of the circular cutter F lying between these stationary cutters. The strip of paper is fed over the table E, and when a determined length has been fed forward the cam C, acting on the arm F, causes the rock-shaft F to move downward from the position shown in Fig. 6 to that shown in Fig.-

7, severing the paper on the lines T T, as indicated in Fig. 15, the stripper F holding the end of the strip against the top of the cutter 6, while the knives press the severed portion of the strip down to the surface of the plate E.

The elastic stripper, while holding the end of the strip against the top of the cutter e, as described, prevents it from moving forward; but the feed-rolls are in constant operation, and there is consequently a slack formed between the feed-rolls and the stripper; but as soon as the upward movement of the knife, carrying with it the stripper, disengages the edge of the paper the elasticity of the paper causes it to spring forward, taking up the slack, so that the machine operates exactly as though there were no interruption in its feed.

Before the paper is severed, as above described, its forward end passing between the guides E has come between the rolls H and G which rolls are secured on the shafts H and G and act partly as feed-rolls and partly as trimming-rolls. The lower roll G has a copper center, on each side of which are rawhide extensions, (indicated at G G see Fig. 11,) and from these rawhide extensions extend pins, (indicated at G G The upper roll H is made in three sections, the outer ones being indicated at h h and the inner one being angularly adjustable on the shaft. To the outer section it of the roll are secured the knives H H, which make the cuts indicated at T T in Fig. 15, the operation of the rolls H and G being to sever from the blank the strips indicated at T T in Fig. 15 and complete the formation of the blank, as shown in Fig. 16.

As the blank is fed from the table E to the rolls G and H it is pressed down over the pins G, which pass into the grooves between the roll-sections H and k and which hold the strips T to the face of the roll G as they are cut off from the blank, as shown in Fig. 1 1. These strips T are finally stripped from the roll G by the action of stripping-fingers G (Shown in action in Fig. 1 1.)

After the blanks are cut out in the manner hereinbefore described the parts T of each blank are folded on the lines T and the portion of the blank T is folded back on the line T against the part T of the blank and secured thereto by paste to form the completed envelop shown in Fig. 18.

I have not thoughtit necessary to describe in the present application the mechanism for folding and pasting the blank, as I have shown, described, and claimed this mechanism in my copending application, Serial No. 81,116, filed November 5, 1901, of which the present application is a division.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an envelo machine, the combination with constant y-acting feed mechanism, of a table over which the paper strip is fed, said table having a transverse elevated knifeedge, an oscillating cutter having cutting edges acting with said knife-edge to sever the aper into lengths, and a stripper supported by said cutter and connected to the cutter by resilient means acting to grasp and arrest the motion of the paper above the knife, and hold it until the knife is retracted.

2. In an envelo -machine, the combination with constant y-acting feed mechanism, of a table over which the paper strip is fed, said table having a transverse elevated knifeedge, an oscillating cutter acting with said knife-edge to sever the paper into lengths and the rotating trimming mechanism acting to cut off lateral strips of the front end of the blanks, as they pass forward in the machine after being severed by the oscillating cutter.

3. In an envelop-machine, the combina tion with feed mechanism of a table over which the paper strip is fed, said table hav ing an elevated knife-edge, an oscillating cutter acting with said knife-edge to sever the paper into lengths, trimming mechanism including the rolls H G which make the final cuts, after the blanks have been severed by the oscillating cutter and While they are fed l 5. In an envelo unachine, an oscillating forward therefrom, said mechanism acting to cutter for severing engths from a aper strip cut off lateral strips of the front end of the having in combination a circular mife-blade 15 blanks, and one of said rolls having pins G F adjustable in angular position and lateral G which hold the ends of the severed strips fixed blades F E in coinbinationwitha stripto it and stripping-fingers G G acting to disper F secured to the oscillating cutter by engage the strips from the pins and roll.

springs. 4. In an envelopqnachine, an oscillati'n M T Q cutter for severing lengths from a paper'stri; CHARLIE" DULIN' having in combination a circular kmfe-blade Witnesses: F adjustable in angular position and lateral H. W. CLARKE,

fixed blades F F. W. M. SUTTON. 

